Cometic Chrysler SB w/318A Heads 4.080in .030in MLS Head Gasket Engine Quest HDS

When you're rebuilding the top end of your Chrysler SB engine, especially with 318 A heads, getting the right head gasket is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the pressures of a high-output engine, ensuring a leak-free connection between your block and heads.

Cometic uses multiple layers of stainless steel for strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that seals well even on less-than-perfect surfaces and can handle tough conditions. This gasket has a compressed thickness of 0.036 inches and is designed for a 4.080-inch bore, with a specific 0.030-inch undersize to account for machining or specific build requirements. It's made to work with aluminum heads on either aluminum or cast iron blocks, offering good resistance to the shearing forces that can occur between different metals.

This gasket fits a wide range of Chrysler, Dodge, and Plymouth vehicles from the mid-60s through the early 90s, including models like the Dodge D150, Chrysler Cordoba, and Plymouth Duster. It's designed for a direct fit and doesn't require any additional sealants, making installation straightforward when you're putting your engine back together.